body {
  font-family: Arial, sans-serif;
  margin: 30px;
  padding: 0;
  background-color: #f4f4f4;
}

.hidden {
  display: none;
}

.container {
  max-width: 250px;
  margin: 0 auto;
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
#user-input {
  width: calc(100% - 22px);
  padding: 10px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 4px;
  margin-right: 10px;
}

.buttons-div {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 20px;
}

.btn {
  padding: 10px 15px;
  font-size: 16px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}
#check-btn {
  background-color: #28a745;
  color: #fff;
}
#clear-btn {
  background-color: #dc3545;
  color: #fff;
}
.results-list {
  margin-top: 20px;
  padding: 10px;
  background-color: gold;
  border-radius: 4px;
}

.results-list li {
  margin-top: 10px;
  padding: 10px;
  list-style-type: none;
  background-color: orange;
}